Co. Rd. N4370 over I-40 Under
Muskogee County, Oklahoma · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Co. Rd. N4370 over I-40 Under in Muskogee County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1971, making it 54 years old at the 2025 inventory.
- It carries about 250 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 202 of the 400 inventoried bridges in Muskogee County rated fair (50.5%); 43 (10.8%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated June 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (35.48232, -95.23878)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 220 ft |
| Location | 6.1 Mi E Mcintosh |
| NBI structure number | 181050000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Muskogee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| U.S. 62 over Creek | 1955 | 25,000 | Fair |
| U.S. 62 over Creek | 1972 | 25,000 | Good |
| S.H. 165 over Web Creek | 1969 | 18,600 | Good |
| S.H. 165 over Treaty Creek | 1969 | 18,600 | Fair |
| Muskogee Tp over K.o. & G.r.r. Under | 1968 | 18,400 | Good |
| Muskogee Tp over Arkansas River | 1968 | 18,400 | Good |
All bridges nearby: Muskogee County, OK bridge conditions · every bridge in Muskogee County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.